Mechanical properties of Mg-Li-Cu-Y metallic glass composites

被引：11

作者：

Gonzalez, S. ^{[1
]}

Louzguine-Luzgin, D. V. ^{[1
]}

Perepezko, J. H. ^{[2
]}

Inoue, A. ^{[1
]}

机构：

[1] Tohoku Univ, WPI Advaced Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 504卷

关键词：

Composite materials; Quenching; Mechanical properties; AMORPHOUS-ALLOYS;

D O I：

10.1016/j.jallcom.2010.02.141

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The mechanical behaviour of Mg(65-x)Li(x)Cu(25)Y(10) (x = 9, 14 and 19) metallic glass composites has been studied. For 9 and 14 at.% Li the alloys exhibit a brittle behaviour. The microstructure of the alloy containing 9 at.% Li consists of a bcc Mg-Li solid solution phase embedded in an amorphous phase. Higher concentrations of Li promote the formation of the bcc phase, Mg(2)Cu and also a small volume fraction of Y-containing intermetallic. The alloy with the highest Li content, i.e. 19 at.%, exhibits a compressive engineering strain of 25%. The hierarchical microstructure design with multiphase components allows for the operation and interaction of different deformation behaviour to provide for useful levels of plastic deformation. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：S114 / S116

页数：3

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